dio
打開終端機，在專案目錄下，輸入以下內容。
flutter_base % flutter pub add dio
確認有dio版本。
語法
Dio().get(網址).then((res) {
成功
}).catchError((error) {
失敗
});
重新run。
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import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
void main() {
Dio().get('https://www.httpbin.org/get').then((res) {
print(res.data); // ""
}).catchError((error) {
print(error);
});
}
This app is linked to the debug service: ws://127.0.0.1:49201/iD0_5D0mbiE=/ws
Debug service listening on ws://127.0.0.1:49201/iD0_5D0mbiE=/ws
Connecting to VM Service at ws://127.0.0.1:49201/iD0_5D0mbiE=/ws
{args: {}, headers: {Accept: */*, Accept-Encoding: gzip, deflate, br, zstd, Accept-Language: zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7, Host: www.httpbin.org, Origin: http://localhost:65521, Priority: u=1, i, Referer: http://localhost:65521/, Sec-Ch-Ua: "Chromium";v="146", "Not-A.Brand";v="24", "Google Chrome";v="146", Sec-Ch-Ua-Mobile: ?0, Sec-Ch-Ua-Platform: "macOS", Sec-Fetch-Dest: empty, Sec-Fetch-Mode: cors, Sec-Fetch-Site: cross-site, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36, X-Amzn-Trace-Id: Root=1-69d89760-0e88bc5a1d8c9f993cf902c8}, origin: 42.73.190.130, url: https://www.httpbin.org/get}
Dio 封裝
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class DioUtils {
final Dio _dio = Dio();
DioUtils(){
_dio.options.baseUrl = 'https://www.httpbin.org';
_dio.options.connectTimeout = Duration(seconds: 10); // 連線超出時間
_dio.options.sendTimeout = Duration(seconds: 10); // 傳送超出時間
_dio.options.receiveTimeout = Duration(seconds: 10); // 接收超出時間
}
}
使用.. 鏈式呼叫
鏈式呼叫(chaining call)，可以在一個執行語句上，呼叫多次方法或指派多次屬性。
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class DioUtils {
final Dio _dio = Dio();
DioUtils() {
_dio.options
..baseUrl = 'https://www.httpbin.org'
..connectTimeout = Duration(seconds: 10)
..sendTimeout = Duration(seconds: 10)
..receiveTimeout = Duration(seconds: 10);
}
}